<template>
  <el-container>
    <!-- 头部 -->
    <el-header>
      <div class="left">
        <img src="../assets/imgs/shop.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <div class="right">
        <span>欢迎您：{{ userInfo.username}}</span>
        <el-button type="danger" size="minis" @click="logout">退出</el-button>
      </div>
    </el-header>
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ?  '64px' : '200px'">
        <!-- 切换菜单的折叠和显示 -->
        <div class="toggle-button" @click="isCollapse=!isCollapse">|||</div>
        <!-- 侧边栏菜单 -->
        <el-menu :default-active="$route.path" unique-opened router :collapse="isCollapse" :collapse-transition="false">
          <el-submenu :index="item.id +'' " v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="iconObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <el-menu-item :index="'/'+subItem.path + ''" v-for="subItem in item.children" :key="subItem.id">
              <i class="el-icon-menu"></i>
              {{subItem.authName}}
            </el-menu-item>
          </el-submenu>

        </el-menu>
      </el-aside>
      <!-- 主体内容 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  // 数据仓库
  data() {
    return {
      // 用户信息对象
      userInfo: null,
      // 左侧菜单列表
      menuList: [],
      // 图标样式对象
      iconObj: {
        '201': 'iconfont icon-shouye',
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
      },
      // 是否折叠左侧菜单
      isCollapse: false
    };
  },
  created() {
    this.userInfo = JSON.parse(sessionStorage.getItem('userInfo'))
    this.getMenuList()
  },
  methods: {
    //退出
    logout() {
      this.$confirm('确定要退出登录吗?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        sessionStorage.clear()//清除sessionStorage数据
        this.$router.push('/login')
      }).catch(() => {
        // this.$message({
        //   type: 'info',
        //   message: '已取消退出'
        // });
      });
    },
    //获取左侧菜单列表
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      // console.log(res)
      // 判断请求是否成功
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.menuList = res.data
      // console.log(this.menuList)
    }
  }
}
</script>

<style lang="less" scoped>
.el-container {
  height: 100%;
}
.el-header {
  background: url("../assets/imgs/header_bg.gif") repeat-x center;
  height: 50px !important;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: white;

  .left {
    display: flex;
    align-items: center;
    img {
      width: 40px;
      margin-left: 20px;
    }
    span {
      font-size: 20px;
    }
  }
  .right {
    span {
      margin-right: 10px;
    }
  }
}
.el-aside {
  .toggle-button {
    background: #60779d;
    font-size: 10px;
    line-height: 24px;
    text-align: center;
    color: white;
    // 字符间距
    letter-spacing: 0.2rem;
    // 设置鼠标手型
    cursor: pointer;
  }
  .el-menu {
    border-right: 0;
    .iconfont {
      // 基础样式
      margin-right: 10px;
    }
  }
}
.el-main {
  background: #eaedf1;
}
</style>